Tire tool



sept. 21,1926. y y 1,600,875

M. GROZNER TIREYTOOL Filed May 29, 1926 2 Sheets-Sheet 2 @3M Tf@ y I lSlm/.mp

Patented Sept. 21, 1926.-

PATENT .o'FFIcE.

MATYES GROZNER, OF SAN FRANCISCO, CALILEORNIA.r`

TIRE

' Application med May 29,

This invention relates lto certain new and useful improvements in tire tools and has foi-one of its objects to provide a tool adapted for clamping engagement with a 5 split tire rim for expanding and contracting the rim at its split joint for the mount ing and removal of a'tire from the rim.

A further object of the invention is to provide ya tire tool of the above type embodying a turn buckle mechanism to cause the opposite ends of the tool carrying rim engaging hooks to be moved either toward oraway trom the rim for expanding and contracting the same. j A still further object of the invention is to provide a tire tool of the turn buckle type wherein Va cross head'at each end of the tool carrying hooks for engagementl with a split rim to contract the same is notched or grooved adjacent one end thereof for engagement with the usual annular bead on the inner face of the rim adjacent one side edge thereof with an outwardly directed arm or extension on the cross head cooperating with the adjacent sides of the wheel rim to maintain the tire tool in position thereon during expansion of the rim.

VvTith the above and other objects in view that will become apparent as Vthe vnature of the invention is better understood, that same consists of the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

in the drawings, wherein like reference characters designate corresponding parts throughout the several views,

Figure 1 is a side elevational view of an automobile tire mounted upon a split rim with the improvedv tire tool in position thereon prior to operation for contracting the split rim,

' Figure 2 is a similar side elevational view showing the tire tool operated and with the split rim contracted,

Figure 3 is a similar side elevational view showing the tire tool in position withthe rim engaging hooks disengaged and with the cross head carrying thel hooks engaging the inner split end of the rim prior to operation thereof for expanding the rim,

Figure 4C is a similar side elevational view showing the split rim fully expanded with the split ends thereof in engagement,

Figure 5 is a vertical cross-sectional view oi a wheel rim with the tire tool in position rooL.

192e. `serial No. marca f thereon having the rimengaging hooks operating for contracting the rim,

Figure 6 is a vertical.cross-sectional view of awheel rim withthe tiretool in position having the cross head carryingthe hooks directly engaged with the wheel rim for expanding the same and showing the out wardly oiiset armor extension on thel cross head withthe .groove therein receiving the annular bead upon the wheel rim, and

Figure 7 is an edge elevational view of the tire to'olY j i As shown more clearly in Figs. 5 and 6 the tire tool being a turn buckle construction that comprises alink having side bars 1 connect-ed intermediatetheir ends by a bridge piece Q-having an opening 3 ytherein for purposes presently to appear, the screw bolt bearings l at each end of the link being oppositely threadedin the usual manner. A bolt 5 threaded' at its inner end as at 6 is engaged vin the threaded bearing 4: at the respective ends of theturn buckle and each screw bolt 5 carries a cross head 7 at its outer end.

rlhe cross head 7 being of a length substantially coincident to the width of an ordinary split rim R is bent at one of its ends to form an eye 8 substantially alined therewith while the other end of the cross head 7 carries an outwardly oiisetangular arm extension 9 having an eyelO at its free end.

The outer side of each cross head 7 in proximity of theV extension arm 9 is formed with a groove 11 for cooperation with the annular bead B formed on the inner Vface of the rim R adjacent the side ange F. A hook 12 is pivotally supported at one end upon vthe eye 8 at one end of the cross -head 7 and has a hooi; vend 13 formed at its outer end, a relatively shorter hook 141 being pivotally supported upon the eye 10 of the extension arm 9 and having a hook end 15 at itsouter end with the` ends 13 and 15 Vextending in the same transverse plane when the hooks.

lat Whichtime the tire T may be readily removed. Y Y

In replacing the tire TY upon the rim after the saine has been collapsed as shown in Fig.

Y 3,the tire tool is located upon the rim with the cross heads .7 thereof directly engaging the inner face of the rim and With the hooks 12 and 14 laterally displaced.V When the tire tool is so disposedthe groove 11 in the outer face' of the cross head engages the rib B upon theinner face of the rim'vvhile the angularly offset arm 9 engages the outer side of the flange Fito forma substantially interlocking connection between the tire tool and rim and to prevent accidental displacement of the tool with -respect to the rim. .Upon rotating Vthe link of the turn buckle in the opposite direction, the Vsorevv bolts are moved .outwardly and the separated or split ends S ofY the rim are movedv to the mating position shown in Fig. 4, and` at Which time Y the usual retaining means Vfor the split ends may be operated to vretain the rim in this position.

WYhile thereis herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein Without departing from the spirit and scope voi the inventionA as claimed.

ln'a tire tool; means for expanding and contracting a split rim including a turn buckle link, screw bolts Working therein, a cross head at the outer end ot each bolt and a rim engaging hook pivoted to each end of the cross head and disposed substantially parallel when the vtool is contracting a rim, an outwardly offset angular extension arm carried by one end of the head and adapted for contacting a side flange of a tire rim during expanding` movement of the rim, one of said engaging hooks being attached to the extension arm and of Vshorter length than the other hook with the-outer hook ends of the hooks lying in the same transverse plane.

In testimony whereof I affix my signature.

MATYES GROZNER. 

